Campbell-scientific 108-LC Temperature Probe for MetData1 Instrukcja Użytkownika Pobierz pdf (Strona 9)

Model 108-LC Temperature Probe for MetData1

5. Programming

Information in this section is not necessary when programming

the MetData1 with the Short Cut Program Builder software.

Instruction 5 (AC Half Bridge) is used to measure the 108 temperature probe.

Instruction 55 (polynomial) is used to find the temperature in degrees Celsius.

MetData1 Datalogger Program Example

01: AC Half Bridge (P5)

1: 1 Reps

2: 3 ± 25 mV Slow Range

3: 8 or 9** In Chan

4: 3 Ex Chan Option

5: 1000 mV Excitation

6: 11* Loc [ Tmp108C ]

7: 200 Mult

8: 0 Offset

02: Polynomial (P55)

1: 1 Reps

2: 11* X Loc [ Tmp108C ]

3: 11* F(X) Loc [ Tmp108C ]

4: -26.97 C0

5: 69.635 C1

6: -40.66 C2

7: 16.573 C3

8: -3.455 C4

9: .301 C5

* Proper entries will vary with input location assignments.

** Specify input channel #8 for connector #4. Specify input channel #9 for connector #7.

TABLE 5-1. Polynomial Coefficients

Coefficient Value

C0 -26.97

C1 69.635

C2 -40.66

C3 16.573

C4 -3.455

C5 0.301

6. Maintenance and Calibration

The 108 Probe requires minimal maintenance. Check monthly to make sure the

radiation shield is free from debris.

NOTE

1 2 3 4 5 6 7 8 9 10 11 12

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Campbell-scientific 108-LC Temperature Probe for MetData1 Instrukcja Użytkownika Strona 9